Alertes Greenhill

While many areas will miss the heaviest downpours, heavy showers and thunderstorms are expected to develop during Friday afternoon and evening. The focus of showers and thunderstorms over will be northern England and much of Wales during the early afternoon before extending over central and eastern England through the afternoon. Thunderstorms will bring 10-20 mm of rain in a short period in a few places with 30-40 mm possible should anywhere see repeated downpours. Lightning and hail will be additional hazards in a few locations. Heavy showers and thunderstorms will gradually ease during Friday evening. For further details see weather/warnings-and-advice/uk-warnings If you find yourself outside and hear thunder, protect yourself by finding a safe enclosed shelter (such as a car). Do not shelter under or near trees, or other structures which may be struck by lightning. If you are on an elevated area, move to lower ground. Consider if your location is at risk of flash flooding. If so, consider preparing a flood plan and an emergency flood kit. Give yourself the best chance of avoiding delays by checking road conditions if driving, or bus and train timetables, amending your travel plans if necessary. People cope better with power cuts when they have prepared for them in advance. It's easy to do; consider gathering torches and batteries, a mobile phone power pack and other essential items. Be prepared for weather warnings to change quickly: when a weather warning is issued, the Met Office recommends staying up to date with the weather forecast in your area.